Thermal activated variation in the ordered structures in magnetic fluids films

Chin Yih Hong, Y. H. Ke, H. E. Horng, S. Y. Yang, H. C. Yang

研究成果: 雜誌貢獻期刊論文同行評審

5 引文 斯高帕斯(Scopus)

摘要

A hexagonal ordered structure of magnetic columns is achieved in a highly homogeneous magnetic fluid film under an external magnetic field perpendicular to the film surface. At a fixed temperature, the magnetic columns are stable. When the temperature rises, the columns remain unchanged initially, and then some of them disappear as the temperature exceeds a critical value. Furthermore, all columns disappear when the temperature is further raised. The column disappearance was due to the dispersion of column particles into the liquid at a higher temperature. The critical temperature, at which the column particles start to melt, was found to increase under a stronger magnetic field. The relationships between the critical temperature and the fluid concentration, as well as the film thickness, are investigated. Thus, the role of temperature in the stability of ordered structures in the magnetic fluid film is clarified.

原文英語
頁(從 - 到)93-96
頁數4
期刊Journal of Magnetism and Magnetic Materials
289
DOIs
出版狀態已發佈 - 2005 三月

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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